Rotary engine.



UNITED STATES Patented April 18, 1905.

PATENT OFFICE.

JOSEPH P. MAGNEY, OF LOS ANGELES, CALIFORNIA, ASSIGNOR TO THE.

MAGNEY ENGINE COMPANY, A CORPORATION OF CALIFORNIA.

ROTARY ENGINE.

SPECIFICATION forming part of Letters Patent No. 787,521, dated April 18, 1905.

' Application filed June 21, 1904. Serial No. 213,543.

To all whom it may concern:

Be it known that I. JOSEPH P. MAGN EY, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Rotary Engines, of which the following is a specification.

My invention relates more particularly to the combination of two rotating piston-heads arranged adjacent one to the other and carrying on their outer periphery projecting pistons adapted to enter into recesses in the opposite piston-head and adapted thereby to be rotated upon the admission of steam at the' inlet-ports and the discharge thereof at the, exhaust-port; and the object of my invention is to produce a simple, reliable, and economical rotary steam engine of the character herein described. I accomplish this object by the device described herein and shown in the accompanying drawings, in which-- Figure 1 is a side elevation of an engine embodying my invention, a portion of the casing being broken away to show the internal mechanism thereof. Fig. 2 is a plan view of my engine as shown in Fig. 1, no portion of the casing being removed therefrom.

In the drawings, A represents the casing, and B the rotating piston heads therein. These piston-heads are keyed to shafts O, on the outer end of which are keyed the cogwheels D, adapted to mesh one with the other, as shown in Fig. 2, and always keep the revoluble piston-heads in proper relation one with the other. Mounted on the periphery of these revoluble piston-heads are the projecting piston B, as shown in Fig. 1. These pistons are disposed, three in number. on each one of the piston-heads and are adapted to pass into the recesses B in the opposite piston-head. Live steam is admitted into the engine casing through the inlet-ports E, one on each side of the casing. (Shown in full lines in Fig. 2 and shown in dotted lines in Fig. l.) The steam will enter the steam-chamber F and operate expansively upon the piston B and move the revoluble piston-heads around in the direction as shown by the arrows in Fig. 1. The steam will expand in this chamber F as the periphery of the piston-heads from the point A to the exhaust-port H, and thence out through the exhaust. I have provided an abutment A disposed on the inner wall of .the casing A and extending from the plane of the center line between the piston-heads, as at a, in either direction along the wall of the casing to the point A. This abutment is concentric with the piston-heads, and a working steam-tight joint will be formed between it and the pistons as the pistons pass along the same.

When this engine is properly geared and the d riving-pulley (not shown) is keyed on the shaft O at O and steam is admitted at the inlet-ports E and the piston-heads have arrived at the position shown in Fig. 1, the recesses B in the piston-heads having passed to the openings in the inlet-ports, steam will immediately begin to enter the steam-chamber F and will continue to enter the chamber until the recesses B have passed beyond the inlet-ports and closed the same. Steam will then act expansively upon the pistons until they have passed the points A on the casing, when the steam will exhaust, as hereinbefore stated. This will happen before the next or following piston will have passed into the steam-chamber, because if the following piston should enter the steam-chamber before the preceding piston had passed the end of the abutment, as at A, in the casing the expanding steam would have created a back pressure thereon and would have detracted from the efliciency of the engine.

Having described my invention, what I claim as new, and desire to secure by Letters Patent. is

1. In an engine of the character herein described having revoluble companion piston- 1 heads mounted in the casing thereof, the said piston-heads having mounted on the periphery thereof projecting pistons and having recesses ad acent thereto adapted to receive the pistons on the companion piston-head; the casing being provided with an abutment extending from a point dividing the two pistonheads to a point marked A in the casing, the said abutment being concentric with the shaft C and adapted to provide a steam-tight joint between said shoulder and the pistons during the travel of the pistons along the abutment.

2. In an engine of the character herein described having two rotating piston heads geared together as shown,the herein-described pistons B mounted on the periphery of the rotating piston-heads and adapted to enter into recesses in the companion piston-heads and recesses B" disposed in the piston-heads and adapted to receive the pistons B in combination with a casing having an abutment A substantially as herein shown and described.

3. The herein-described rotary engine comprising two rotating piston-heads B mounted as shown, and having on the periphery thereof three pistons B and adjacent to each piston a recess B, in. combination with a casing A having abutment A disposed in the inner walls of the casing substantially as herein shown and described.

4;. In a rotary engine of the character herein described provided with abutment A" and having companion rotating piston-heads disposed in the casing thereof and geared to rotate in unison in said casing, inlet-ports for the admission of steam disposed in the side walls of said casing as shown and adapted to feed steam into the steam-chamber F on the rotation of the piston-heads and arranged to close the inlet-ports to the admission of steam before the pistons have passed the abutment A.

In witness that I claim the foregoing I have hereunto subscribed my name.

' JOSEPH P. MAGNEY.

Witnesses:

HENRY T. HAZARD, IVIARGARETE C. NIGKELESON. 

